topic Re: cannot allocate pty in Operating System - HP-UX

cannot allocate pty

Martin Wells — Tue, 20 Apr 2004 05:30:08 GMT

I'm getting the above message when I'm trying to open new sessions on a L-Class running 11i

I have increased the npty setting from with in sam and also used the lnsf -d pty -n 1500 command to build the device files but I'm still getting the same error?

Re: cannot allocate pty

Mark Grant — Tue, 20 Apr 2004 05:34:00 GMT

This can be the result of other problems too. Or at least it can be the first thing you notice when, for example, the machine can't fork because of virtual memory issues.

If you are sure that you have set sufficient number of pty's I would have a lose look at the syslog to see if there are any other issue that might e causing this problem.

Re: cannot allocate pty

KapilRaj — Tue, 20 Apr 2004 05:35:14 GMT

1. Makle sure u have enough pseudo terminal device files; if not increase it from sam
2. Make sure u r not running out of memory
swapinfo

Kaps

Re: cannot allocate pty

Fabio Ettore — Tue, 20 Apr 2004 05:35:21 GMT

Hi,

change also nstrpty:

# insf -d nstrpty -n 1500

HTH.

Best regards,
Ettore

Re: cannot allocate pty

Martin Wells — Tue, 20 Apr 2004 05:43:18 GMT

swapinfo looks ok
and I can't find any errors in the syslog.

I've also performed the insf command on nstrpty but still no luck

Re: cannot allocate pty

KapilRaj — Tue, 20 Apr 2004 05:51:13 GMT

I am making a wild guess ....

There is something called a ptydaemon which is started by the RC script ! Is that running ?.

Check /sbin/rc?.d directories for a script that starts this daemon

Kaps

Re: cannot allocate pty

Pete Randall — Tue, 20 Apr 2004 05:52:23 GMT

Martin,

If you have Glance, take a look at the "System Tables Report". It will (probably) pinpoint exactly which resource you're running out of. (It definitely will show you npty!).

Pete

Re: cannot allocate pty

Martin Wells — Tue, 20 Apr 2004 05:58:33 GMT

Glance is not showing that I'm running out of anything. Its says i'm not using any npty sessions?

Re: cannot allocate pty

Fabio Ettore — Tue, 20 Apr 2004 07:53:29 GMT

Martin,

what network service are you using to connect to HP-UX box? telnet, rlogin, both, whichever?

Best regards,
Ettore